| 1 | (built AND environment) OR (“built environment”) | 12,390 |
| 2 | older* OR senior* OR elder* | 642,245 |
| 3 | #1 AND #2 | 590 |
| 4 | (review AND systematic OR meta-analysis) | 391,036 |
| 5 | #3 AND #4 | 26 |
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